Flue-cleaning machine



Patented May 4,1920.

IN VEN TOR. H H do/vcs.

04114.42, ATTORNEY. C.

HARRY H. JONES, 0F SEGUNDO, COLORADO, ASSIGNOR 0F ONE-HALF TO] A. L. 'DAIN, OF TRINIDAD, COLORADO.

FLUE-CLEANING MACHINE.

Specification of Letters Patent.

Patented May 4, 1920.

Application filed March 12, 1919. Serial N 0. 282,243.

To all whom it may concern:

Be it known that I, HARRY H. JoNns, a citizen of the United States, residing at Segundo, in the county of Las Animas and State 'of.Colorado,:- have invented certain new and useful Improvements in Flue- Cleaning Machines, of which the following is a specification.

This invention relates to flue cleaning machines, and its object is to provide a mechanism of simple construction which operates to free boiler-fines from scale or other adherent matter through intermittently delivered impacts of a mechanicallyoperated moving body.

An embodiment of my invention has been shown in the accompanying drawings in the various views of which like parts are similarly designated, and in which Figure 1 is a side elevation of the machine showing a flue in the position it occupies for the removal of its scale in the operation thereof; I

Fig. 2, a section taken on the line 2--2, Fig. 1, drawn to an enlarged scale;

Fig. 3, a fragmentary view of one of the flue supports of the machine taken along the line 33, Fig. 1, and

Fig. 4:, a plan view of the adjustable stop of the machine which limits the lateral motion of the flue.

The machine consists of a supporting structure composed of two standards 3 and 4 connected by a brace 21 at one side and by a hereinafter to be described flue support at the other side. Pillow blocks 5 and 6 on the structure support a rotary shaft 7 which at one of its ends has a pulley 8 for its connection with a conveniently located motor and which at its opposite end carries a hammer head 9. v

The head consists of a circular wheel which has a plurality of peripheral recesses 10 and which for convenience in construction may be made of two rigidly connected coaxially adjoining disks.

Hammers 12 which in their retracted position are contained within the recesses, are pivotally secured at one of their ends through the medium of bolts 13. V

The before-mentioned flue-support 14: which connects the standards of the supporting structure comprises upwardly curving arms 15 which projectat opposite sides thereof'at a considerable distance fromuthe revolving hammer head.

Brackets 16 secured to the arms at their extremities, cooperate therewith for the support of anti-friction rollers 17 upon which the flue to be cleaned rests in the operation of the machine.

A slotted angle piece 18 adjustably mounted upon the standard 4: adjacent the hammer head by means of a countersunk bolt 19, provides a stop which limits the lateral movement of the flue when it is struck by the hammers on the head 9.

In the operation of the machine, a flue 20 supported on the roller at the ends of the arms, as shown in Fig. 1, is by the revolving motion of the shaft 7 forcibly struck in rapid succession by the hammers which are thrown outwardly by centrifugal action.

The hammers beating intermittently upon the flue impart thereto a succession of shocks which by reaction upon the covering of scale and rust, cause its rapid and complete disruption and dislodgement.

The stop 18 on the standard adjacent the revolving hammer-head, prevents excessive lateral displacement of the flue while it is being struck by the hammers and by feed ing the flue longitudinally uponits supports and if necessary turning it from time to time, every particle of the incrustation on either side of the flue is removed.

It will be understood that by placing two or more heads on the shaft 7 the work of cleaning the fines may be expedited.

Having thus described my invention what I claim and desire to secure by Let-.

ters-Patent is:

1. A flue-cleaning machine comprising in combination, a revolving head, hammers pivoted thereon for outward motion by centrifugal action, supports remote from the head at opposite sides thereof, for holding a fine in a-position to be struck by the hammers, and adjustable means adjacent the Eead for limiting a lateral motion of the 2. In a flue-cleaning machine, the combination with a flue-support, of a revolving hammer-head comprising a peripherally recessed body and pivoted arms contained in the recesses in their retracted position and capable of movement outside the same by centrifugal action, to beat upon a flue on,

" to permit of its lateral vibration, a mechanically operating hammer mounted to strike the flue between its said points of support in a direction transverseto its longitudinal extent, and means to limit the lateral motion of the flue.

5. A flue-cleaning machinecomprising in combination, a structure for the support of a flue at widely separated points, adapted to permitof its lateral vibration, a head mounted for rotation about an axis substantially parallel to that of a flue supported on said structure, and hammers pivoted on the head for outward motion by centrifugal force, to strike the flue between its said points of support.

In testimony whereof I have afliXed-Vmy signature.

HARRY H. JONES. j 

